In 1961, at the height of the Cold War, the Soviet Union detonated the Tsar Bomba, the largest and most powerful nuclear weapon ever created by humankind. Dropped over the remote Arctic island of Novaya Zemlya, the 50-megaton hydrogen bomb produced an explosion so immense it defied comprehension — its mushroom cloud rose nearly 60 kilometers into the sky, seven times taller than Mount Everest, and was visible from over 600 miles away. The shockwave circled the Earth three times, and windows shat